/*
 * Copyright 2018 Broadband Forum
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.broadband_forum.obbaa.dm;

/**
 * <p>
 * An interface to supply non-config (state) values to a Device.
 * The implementations must be registered with {@link DeviceManager#addDeviceStateProvider(DeviceStateProvider)} during init.
 * The implementations must be unregistered with {@link DeviceManager#removeDeviceStateProvider(DeviceStateProvider)} at destroy.
 * </p>
 */
public interface DeviceStateProvider {

    /**
     * Callback to perform business init activities when a new device gets managed by {@link DeviceManager}.
     * @param deviceName - Key of the device.
     */
    void deviceAdded(String deviceName);

    /**
     * Callback to perform business housekeeping activities when a device gets un-managed(removed) by {@link DeviceManager}.
     * @param deviceName - Key of the device.
     */
    void deviceRemoved(String deviceName);
}
